US7806728B2 - Electrical connector with crimp contact - Google Patents

Electrical connector with crimp contact Download PDF

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Publication number
US7806728B2
US7806728B2 US12/436,934 US43693409A US7806728B2 US 7806728 B2 US7806728 B2 US 7806728B2 US 43693409 A US43693409 A US 43693409A US 7806728 B2 US7806728 B2 US 7806728B2
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US
United States
Prior art keywords
crimp contact
connector
connector body
contact
protrusions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US12/436,934
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US20090280700A1 (en
Inventor
Taizo Sogo
Takayuki Arai
Takeshi Sato
Taku Kawano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Tsushin Kogyo Co Ltd
Original Assignee
Honda Tsushin Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Assigned to HONDA TSUSHIN KOGYO CO., LTD. reassignment HONDA TSUSHIN KOGYO CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ARAI, TAKAYUKI, KAWANO, TAKU, SATO, TAKESHI, SOGO, TAIZO
Publication of US20090280700A1 publication Critical patent/US20090280700A1/en
Application granted granted Critical
Publication of US7806728B2 publication Critical patent/US7806728B2/en
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/422—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means
    • H01R13/4223—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means comprising integral flexible contact retaining fingers
    • H01R13/4226—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means comprising integral flexible contact retaining fingers comprising two or more integral flexible retaining fingers acting on a single contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/436—Securing a plurality of contact members by one locking piece or operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/50—Bases; Cases formed as an integral body
    • H01R13/501—Bases; Cases formed as an integral body comprising an integral hinge or a frangible part

Definitions

  • the present invention relates to an electrical connector including a crimp contact and a connector housing in which the crimp contact is inserted and held.
  • a cable 22 is mounted to the crimp contact 21 , crimped and electrically connected to the crimp contact in a crimping portion 23 , and fixed, for example, as shown in FIG. 3 . Then, the crimp contact 21 is inserted from an opening at one end of the connector housing 24 made of a synthetic resin.
  • the crimp contact is made to pass over a protrusion 25 and is engaged.
  • the protrusion 25 is formed on a resilient molded lance 24 a of the connector housing 24 .
  • the protrusion 25 is located in an intermediate position of the longitudinal extent of the crimp contact 21 and projects in a direction perpendicular to the longitudinal direction of the crimp contact.
  • the crimp contact 21 is locked against backward motion. In this way, the molded lance is formed in the direction of insertion of the crimp contact 21 , thus forming a means for preventing the crimp contact from disengaging.
  • FIG. 4 Another known structure is shown in FIG. 4 , where a crimp contact 26 has a flexible contact lance 26 a . If the crimp contact 26 is inserted into a connector housing 27 from the opening at one end of the housing 27 after a cable 22 has been connected and held to the crimp contact 26 , the front end of the contact lance 26 a falls when it passes over a step portion 27 a and becomes caught on the step portion 27 a which is formed in an intermediate position of the longitudinal extent of the housing 27 inside the housing 27 . In this way, the crimp contact is prevented from moving in the direction opposite to the direction of insertion and thus does not disengage.
  • Such conventional electrical connectors have structures as shown in FIGS. 5A and 5B , where the connectors are known to have contact lances 28 a and 29 a , respectively. Furthermore, a connector described in JPA-2006221819 is known.
  • a spear-like or wedge-like protrusion known as a lance
  • a lance is formed in the direction of insertion of the crimp contact 21 or crimp contact 26 and, therefore, disconnection is prevented.
  • a slight gap is left between the front-end surface of the lance and the end surface of the engagement portion. This produces rattling in the direction of insertion.
  • the crimp contact is used repeatedly, the engagement between the lance and the engagement portion becomes less tight gradually. There arises a problem that if the crimp contact is strongly pulled in the direction reverse to the direction of insertion, the crimp contact comes off.
  • the present invention is intended to solve the foregoing problems with the prior art. It is an object of the invention to provide an electrical connector having a crimp contact which is prevented from being pulled out longitudinally of a connector cable and which, when mounted in a connector housing, is prevented from rattling longitudinally of the crimp contact.
  • the present invention provides an electrical connector including a crimp contact electrically connected with a connector cable and a connector housing for placing the crimp contact in position and holding the crimp contact.
  • the crimp contact has sidewall surfaces of U-shaped cross section on opposite sides. The sidewall surfaces have engagement protrusions extending outwardly.
  • the connector housing has a connector body and a disengagement-preventing cover. The protrusions of the crimp contact are inserted into the connector body perpendicularly to the longitudinal direction of the connector cable and accommodated in the connector body.
  • the connector body has engagement portions in which the protrusions are engaged.
  • the disengagement-preventing cover is mounted to the connector body via a hinge such that the cover can be opened and closed. The disengagement-preventing cover closes a top portion of the connector body to prevent the crimp contact from coming off upward after mounted in the connector body.
  • the crimp contact is inserted and fitted into the fitting portion of the connector housing in a direction perpendicular to the direction in which the crimp contact is pulled out by the connector cable. Consequently, there is no possibility that the crimp contact is pulled out in the longitudinal direction of the connector cable.
  • the crimp contact mounted in the connector housing is prevented from rattling in position in the longitudinal direction. Consequently, the contact of the contacting portions of the crimp contact is stabilized.
  • FIG. 1 is a vertical cross section of an electrical connector according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken on line 2 - 2 of FIG. 1 ;
  • FIG. 3 is a vertical cross section of an electrical connector according to a prior-art example, showing the manner in which a crimp contact is fitted in a connector housing having a molded lance;
  • FIG. 4 is a vertical cross section of an electrical connector according to another prior-art example, showing the manner in which a crimp contact having a contact lance is fitted in a connector housing;
  • FIGS. 5A and 5B are a front elevation and a vertical cross section in side elevation, respectively of an electrical connector according to a further prior-art example.
  • FIGS. 6A and 6B are a front elevation and a vertical cross section in side elevation, respectively, of an electrical connector according to a further prior-art example.
  • an electrical connector 1 includes a crimp contact 3 and a connector housing 4 made of a synthetic resin.
  • the crimp contact 3 is electrically connected with a connector cable 2 .
  • the housing 4 places the crimp contact 3 in position and holds the contact 3 .
  • the connector housing 4 includes a connector body 4 b and a disengagement-preventing cover 4 d being a cover member that can be opened and closed via a hinge 4 c .
  • the connector body 4 b has groove-shaped accommodation portions in which the crimp contact 3 with which the connector cable 2 is connected is received. Concave engagement portions 4 a in which the protrusions 3 b are engaged are formed in both sidewalls of each accommodation portion.
  • the distance between the both sidewall surfaces of the crimp contact 3 (i.e., the dimension of the outer width) is set to be slightly smaller than the dimension of the inner width of the accommodation portions in the connector body 4 b .
  • the distance between the protrusions 3 b (the dimension of the outer width) is set to be larger than the dimension of the inner width of the accommodation portions.
  • the disengagement-preventing cover 4 d is rotated about the hinge 4 c to close the opening in the top portion of the connector body 4 b .
  • the closed cover 4 d is engaged and anchored to a locking portion 4 e standing upright from the rear end of the connector body 4 b and becomes locked.
  • the crimp contact 3 is engaged and anchored by the engagement portions 4 a .
  • upward escaping motion is doubly prevented by closing the disengagement-preventing cover 4 d in this way.
  • the crimp contact 3 with which the connector cable 2 is connected is placed in position and held both in the direction in which the cable 2 is pulled and in the perpendicular direction. Therefore, when the connector has been mounted, it rattles neither in the longitudinal direction nor in the perpendicular direction. The contact position of the contact portion 3 c of the crimp contact 3 is stabilized.

Abstract

An electrical connector is offered which has a crimp contact connected with a connector cable, the crimp contact being held in position to a connector housing without rattling. The crimp contact has sidewall surfaces of U-shaped cross section. The sidewall surfaces are located on opposite sides. The sidewall surfaces have outwardly facing engagement protrusions. The connector housing has a connector body and a disengagement-preventing cover for closing a top portion of the connector body to prevent the crimp contact from coming off upward after the crimp contact has been mounted in the connector body. The connector body has engagement portions in which the protrusions of the crimp contact are inserted and received perpendicularly to the longitudinal direction of the connector cable. The protrusions are engaged in the engagement portions. The disengagement-preventing cover is mounted to the connector body via a hinge such that the cover can be opened and closed.

Description

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical connector including a crimp contact and a connector housing in which the crimp contact is inserted and held.
2. Prior Art
In the prior art, in order that a connector cable be crimped and connected to a crimp contact and that the crimp contact be inserted into a connector housing, a cable 22 is mounted to the crimp contact 21, crimped and electrically connected to the crimp contact in a crimping portion 23, and fixed, for example, as shown in FIG. 3. Then, the crimp contact 21 is inserted from an opening at one end of the connector housing 24 made of a synthetic resin.
Thereafter, the crimp contact is made to pass over a protrusion 25 and is engaged. The protrusion 25 is formed on a resilient molded lance 24 a of the connector housing 24. The protrusion 25 is located in an intermediate position of the longitudinal extent of the crimp contact 21 and projects in a direction perpendicular to the longitudinal direction of the crimp contact. The crimp contact 21 is locked against backward motion. In this way, the molded lance is formed in the direction of insertion of the crimp contact 21, thus forming a means for preventing the crimp contact from disengaging.
Another known structure is shown in FIG. 4, where a crimp contact 26 has a flexible contact lance 26 a. If the crimp contact 26 is inserted into a connector housing 27 from the opening at one end of the housing 27 after a cable 22 has been connected and held to the crimp contact 26, the front end of the contact lance 26 a falls when it passes over a step portion 27 a and becomes caught on the step portion 27 a which is formed in an intermediate position of the longitudinal extent of the housing 27 inside the housing 27. In this way, the crimp contact is prevented from moving in the direction opposite to the direction of insertion and thus does not disengage. Such conventional electrical connectors have structures as shown in FIGS. 5A and 5B, where the connectors are known to have contact lances 28 a and 29 a, respectively. Furthermore, a connector described in JPA-2006221819 is known.
In such conventional electrical connectors, however, a spear-like or wedge-like protrusion, known as a lance, is formed in the direction of insertion of the crimp contact 21 or crimp contact 26 and, therefore, disconnection is prevented. A slight gap is left between the front-end surface of the lance and the end surface of the engagement portion. This produces rattling in the direction of insertion. If the crimp contact is used repeatedly, the engagement between the lance and the engagement portion becomes less tight gradually. There arises a problem that if the crimp contact is strongly pulled in the direction reverse to the direction of insertion, the crimp contact comes off.
SUMMARY OF THE INVENTION
The present invention is intended to solve the foregoing problems with the prior art. It is an object of the invention to provide an electrical connector having a crimp contact which is prevented from being pulled out longitudinally of a connector cable and which, when mounted in a connector housing, is prevented from rattling longitudinally of the crimp contact.
Accordingly, the present invention provides an electrical connector including a crimp contact electrically connected with a connector cable and a connector housing for placing the crimp contact in position and holding the crimp contact. The crimp contact has sidewall surfaces of U-shaped cross section on opposite sides. The sidewall surfaces have engagement protrusions extending outwardly. The connector housing has a connector body and a disengagement-preventing cover. The protrusions of the crimp contact are inserted into the connector body perpendicularly to the longitudinal direction of the connector cable and accommodated in the connector body. The connector body has engagement portions in which the protrusions are engaged. The disengagement-preventing cover is mounted to the connector body via a hinge such that the cover can be opened and closed. The disengagement-preventing cover closes a top portion of the connector body to prevent the crimp contact from coming off upward after mounted in the connector body.
In the electrical connector of the present invention, the crimp contact is inserted and fitted into the fitting portion of the connector housing in a direction perpendicular to the direction in which the crimp contact is pulled out by the connector cable. Consequently, there is no possibility that the crimp contact is pulled out in the longitudinal direction of the connector cable. The crimp contact mounted in the connector housing is prevented from rattling in position in the longitudinal direction. Consequently, the contact of the contacting portions of the crimp contact is stabilized.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a vertical cross section of an electrical connector according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken on line 2-2 of FIG. 1;
FIG. 3 is a vertical cross section of an electrical connector according to a prior-art example, showing the manner in which a crimp contact is fitted in a connector housing having a molded lance;
FIG. 4 is a vertical cross section of an electrical connector according to another prior-art example, showing the manner in which a crimp contact having a contact lance is fitted in a connector housing;
FIGS. 5A and 5B are a front elevation and a vertical cross section in side elevation, respectively of an electrical connector according to a further prior-art example; and
FIGS. 6A and 6B are a front elevation and a vertical cross section in side elevation, respectively, of an electrical connector according to a further prior-art example.
 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to FIGS. 1 and 2, an electrical connector 1 according to the present invention includes a crimp contact 3 and a connector housing 4 made of a synthetic resin. The crimp contact 3 is electrically connected with a connector cable 2. The housing 4 places the crimp contact 3 in position and holds the contact 3.
As shown in FIG. 2, in the electrical connector 1, semispherical engagement protrusions 3 b project outward from sidewall surfaces 3 a of U-shaped cross section of the crimp contact 3. The connector housing 4 includes a connector body 4 b and a disengagement-preventing cover 4 d being a cover member that can be opened and closed via a hinge 4 c. The connector body 4 b has groove-shaped accommodation portions in which the crimp contact 3 with which the connector cable 2 is connected is received. Concave engagement portions 4 a in which the protrusions 3 b are engaged are formed in both sidewalls of each accommodation portion.
The distance between the both sidewall surfaces of the crimp contact 3 (i.e., the dimension of the outer width) is set to be slightly smaller than the dimension of the inner width of the accommodation portions in the connector body 4 b. The distance between the protrusions 3 b (the dimension of the outer width) is set to be larger than the dimension of the inner width of the accommodation portions. When the crimp contact 3 connected with the connector cable 2 is inserted into the accommodation portions inside the connector body 4 b from above, the protrusions 3 b of the crimp contact 3 come into engagement with the upper fringes of the engagement portions 4 a and 4 b, respectively. As a result, the protrusions 3 b are anchored.
After the crimp contact 3 is accommodated and anchored in the connector body 4 b as described previously, the disengagement-preventing cover 4 d is rotated about the hinge 4 c to close the opening in the top portion of the connector body 4 b. The closed cover 4 d is engaged and anchored to a locking portion 4 e standing upright from the rear end of the connector body 4 b and becomes locked. The crimp contact 3 is engaged and anchored by the engagement portions 4 a. In addition, upward escaping motion is doubly prevented by closing the disengagement-preventing cover 4 d in this way.
When the crimp contact 3 has been mounted, the protrusions 3 b engage the engagement portions 4 a. The disengagement-preventing cover 4 d suppresses upward motion to thereby prevent the connected cable 2 from coming off if it is pulled in the longitudinal direction. The protrusions 3 b are reliably engaged and anchored by the resilient force of the sidewall surfaces 3 a that tend to spread apart outwardly.
In this way, in the electrical connector 1, the crimp contact 3 with which the connector cable 2 is connected is placed in position and held both in the direction in which the cable 2 is pulled and in the perpendicular direction. Therefore, when the connector has been mounted, it rattles neither in the longitudinal direction nor in the perpendicular direction. The contact position of the contact portion 3 c of the crimp contact 3 is stabilized.

Claims (1)

1. An electrical connector having a crimp contact electrically connected with a connector cable and a connector housing for placing the crimp contact in position and holding the crimp contact;
wherein said crimp contact has sidewall surfaces of U-shaped cross section, the sidewall surfaces being located on opposite sides, the sidewall surfaces having outwardly facing engagement protrusions;
wherein said connector housing has a connector body and a disengagement-preventing cover for closing a top portion of the connector body to prevent the crimp contact from coming off upward after the crimp contact has been mounted in the connector body the cover being mounted to the connector body via a hinge so as to be capable of being opened and closed; and
wherein the connector body has engagement portions into which the engagement protrusions of the crimp contact are inserted and received in a direction perpendicular to a longitudinal direction of the connector cable, the protrusions being engaged in the engagement portions.
US12/436,934 2008-05-08 2009-05-07 Electrical connector with crimp contact Expired - Fee Related US7806728B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008122130A JP2009272155A (en) 2008-05-08 2008-05-08 Electrical connector
JP2008-122130 2008-05-08

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US20090280700A1 US20090280700A1 (en) 2009-11-12
US7806728B2 true US7806728B2 (en) 2010-10-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8556650B2 (en) * 2009-07-03 2013-10-15 Yazaki Corporation Connector
CN104769784A (en) * 2012-10-30 2015-07-08 罗森伯格高频技术有限及两合公司 Plug connector with insulating part

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753193A (en) * 1971-04-27 1973-08-14 Amp Inc Socket terminal
US3764960A (en) * 1972-05-25 1973-10-09 Prod Inc Van Cluster assembly and connector clip therefor
US6702623B2 (en) * 2001-05-25 2004-03-09 Yazaki Corporation Connector
JP2006221819A (en) 2005-02-08 2006-08-24 Fujikura Ltd Connector and its manufacturing method
US7402087B2 (en) * 2006-08-01 2008-07-22 Hon Hai Precision Ind. Co., Ltd. Electric connector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63111779U (en) * 1987-01-10 1988-07-18
JPH0684682U (en) * 1993-05-19 1994-12-02 エスエムケイ株式会社 Wire connector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753193A (en) * 1971-04-27 1973-08-14 Amp Inc Socket terminal
US3764960A (en) * 1972-05-25 1973-10-09 Prod Inc Van Cluster assembly and connector clip therefor
US6702623B2 (en) * 2001-05-25 2004-03-09 Yazaki Corporation Connector
JP2006221819A (en) 2005-02-08 2006-08-24 Fujikura Ltd Connector and its manufacturing method
US7402087B2 (en) * 2006-08-01 2008-07-22 Hon Hai Precision Ind. Co., Ltd. Electric connector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8556650B2 (en) * 2009-07-03 2013-10-15 Yazaki Corporation Connector
CN104769784A (en) * 2012-10-30 2015-07-08 罗森伯格高频技术有限及两合公司 Plug connector with insulating part
CN104769784B (en) * 2012-10-30 2016-12-28 罗森伯格高频技术有限及两合公司 There is the plug-in connector of insulation division

Also Published As

Publication number Publication date
JP2009272155A (en) 2009-11-19
US20090280700A1 (en) 2009-11-12

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AS Assignment

Owner name: HONDA TSUSHIN KOGYO CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SOGO, TAIZO;ARAI, TAKAYUKI;SATO, TAKESHI;AND OTHERS;REEL/FRAME:022651/0600

Effective date: 20090421

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Expired due to failure to pay maintenance fee

Effective date: 20141005